Safety and Efficacy of Combination SARS-CoV-2 Neutralizing Monoclonal Antibodies Amubarvimab Plus Romlusevimab in Nonhospitalized Patients With COVID-19
Authors: Teresa H. Evering, Kara W. Chew, Mark J. Giganti, Carlee Moser, Mauricio Pinilla, David Alain Wohl, Judith S. Currier, Joseph J. Eron, Arzhang Cyrus Javan, Rachel Bender Ignacio, David Margolis, Qing Zhu, Ji Ma, Lijie Zhong, Li Yan, Ulises D’Andrea Nores, Keila Hoover, Bharat Mocherla, Manish C. Choudhary, Rinki Deo, Justin Ritz, William A. Fischer, Courtney V. Fletcher, Jonathan Z. Li, Michael D. Hughes, Davey Smith, Eric S. Daar, Teresa H. Evering, Kara W. Chew, Mark J. Giganti, Carlee Moser, David Alain Wohl, Judith S. Currier, Joseph J. Eron, Arzhang Cyrus Javan, Rachel Bender Ignacio, David Margolis, Ulises D’Andrea Nores, Keila Hoover, Bharat Mocherla, Manish C. Choudhary, Justin Ritz, William A. Fischer, Courtney V. Fletcher, Jonathan Z. Li, Michael D. Hughes, Davey Smith, Eric S. Daar, Lara Hosey, Jhoanna Roa, Nilam Patel, Kelly Colsh, Irene Rwakazina, Justine Beck, Scott Sieg, Sandra Cardoso, Katya Corado, Prasanna Jagannathan, Nikolaus Jilg, Alan Perelson, Sandy Pillay, Cynthia Riviere, Upinder Singh, Babafemi Taiwo, Joan Gottesman, Matthew Newell, Susan Pedersen, Joan Dragavon, Cheryl Jennings, Brian Greenfelder, William Murtaugh, Jan Kosmyna, Morgan Gapara, Akbar Shahkolahi, Verónica Lacal, Diego Salusso, Sebastian Nuñez, Marcelo Rodrigo Rodriguez, Luciana Laborde, Marcelo Papasidero, Luis Wehbe, Mariana Gonzalez, Felicitas Fernandez Voena, Tomas Alvarez, Amaru Lopez, Virginia Huhn, Pablo Dieser, Fernando Bordese, Marisa Mussi, Rodrigo de Carvalho Santana, Adriana Aparecida Tiraboschi Bárbaro, Breno Santos, Rita de Cássia Alves Lira, Andre Luiz Machado da Silva, Maria Pia Diniz Ribeiro, Nathália Soliva, Eduardo Vasconcellos, Jorge Eurico Ribeiro, Miriam Amaral Enéas, Jorge Pinto, Julia Fonseca de Morais Caporali, Flávia Gomes Faleiro Ferreira, Norma Erendira Rivera Martinez, Victor Casildo Bohorquez Lopez, Melchor Victor Frias, Krystle Fetalvero, Alyxzza Maranan, Jennifer Rosa, Thomas Coetzer, Sr Maureen Mohata, Umesh Lalloo, Penelope Madlala, Larisha Pillay-Ramaya, Jaclyn Ann Bennet, Noluthando Mwelase, Nokuphiwa Mbhele, Frederick Petrick, Leonard Joubert, Sr Rose Mbali, Natasha Joseph, Mmatsie Manentsa, Eugene van der Walt, Mduduzi Sandile Lawrance Masilela, Zinhle Zwane, Tendai Chiperera, Lerato Mohapi, Suri Moonsamy, Usha Singh, Kirsten McHarry, Elizma Snyman, Pieter Lennox, James Craig Innes, Oteng Letlape, Olebogeng Jonkane, William Brumskine, Tania Adonis, Ni Ni Sein, Modulakgotla Sebe, Yacoob Vahed, Nazreen Jeewa Hussen, Ismail Mitha, Vasundhara Cheekati, Purna Cheekati, Christie Lummus, Samuel Idarraga, Andrew Kim, David N. Pham, Wei-Hsin Kao, Michael M. Pfeffer, Miriam Batule Dominguez, Francisco Patron, Luz Guzman, Esnaldo Ferrer, Anju Malik, Anna Bryan, Melanie Arnold, Idania Fernandez, Cinzia Karpf, Aniuska Ruiz, David Taylor, Eric Folkens, Jennifer Manne, Sigal Yawetz, Cheryl Keenan, Emeka Eziri, Carl Fichtenbaum, Jenifer Baer, Sarah Trentman, Robert Call, Leroy Vaughan, Aaron Milstone, Jamie Alex Slandzicki, Jessica Wallan, Clinton Guillory, Nancy Andrews, Leslie Hughes, Jonathan Berardi, Celine Arar, Randall Quinn, Jorge P. Amaya, Marissa Gomez-Martinez, Luis Cantu, Monica Betancourt-Garcia, Nwora Lance Okeke, Charles M. Burns, Fadi Haddad, Victoria Haddad, Jeanne-Elyse Cedeno, Lisbel Gonzalez, Lilliana Pestana, Augusto Focil, Griselda Rosas, Susana Moyano, Yaneicy Gonzalez Rojas, Ahmad Aswad, Yevgeniy Bukhman, Manish Jain, Eugene Bukhman, Humam Farah, Rebekah McClain, Sadia Shaik, Timothy Hatlen, Deepa Gotur, Joseph Surber, Jeffrey Kingsley, April Pixler, Alex Zopo, Jack Herman, Craig Herman, Ramon Leon, Boris Nikolov, Laurie Welton, Barbara Bromberg, Kelly Christina, Fernando Gonzalez Vergara, Ana I. Gonzalez, Noemi Gonzalez, Michael Gelman, Olga Andriunas, Zarema Jagizarov, Jan Westerman, David Davis, Donna Sherer, Kelly Dooley, Becky Becker, Adaliah Wilkins, Jose Pérez, Eloy Roman, Heriberto Fernández, Kelly Beck, Valarie Maldonado, Jennifer Veltman, Rajesh Gandhi, Katrina Shea, Matthew Planchon, Laura Bogan Herpel, Kaushlendra K. Tripathi, Donald C. Day, John Pullman, Erin Williams-Leber, Misty Johnson, Michelle Hecker, Ann Avery, George W. Monlux, Elizabeth Juneja, Arthur Wernick, Karelia Ruiz, Maureen Hernández, Yadilys Pérez, Claudia Hawkins, Baiba Berzins, Carlos Malvestutto, Heather Harber, Robyn Cicarella, Edwin DeJesus, Charlotte-Paige Rolle, Almena L. Free, Sallie D. Pulliam, Debra Weinstein, Rosa M. Suarez, Ezequiel Socorro, Estefania Socorro, Gene Neytman, Jack Herman, Craig Herman, Raymond Easley, Mariam Aziz, Joan Swiatek, Avish Nagpal, Breanna Kompelien, Kathryn McEvoy, Susan E. Hoover, Allison Lutz, Jessica Just, Manuel Hernandez, Yanly B. Victoria, Gabriel Rodriguez, Divya Pathak, Joshua J. Ordway, Megan Heffner, Patrick Weston, Khalilah Weston, Madhu Choudhary, Jennifer Sullivano, Olayemi Osiyemi, Myriam Izquierdo, Odelsey Torna, Brian Clemency, Renoj Varughese, Joshua Lynch, Aleen Khodabakhshian, Samantha Fortier, Christopher Coyne, Alexandrea Cronin, Constance Benson, Steven Hendrickx, Rosemarie Ramirez, Anne Luetkemeyer, Suzanne Hendler, Dennis Dentoni-Lasofsky, Mobeen Rathore, Saniyyah Mahmoudi, Amna Riaz, Mario Castro, Leslie Spikes, Chase Hall, Jonathan Oakes, Amy James Loftis, Pablo Tebas, William Short, Michael P. Dube, Saahir Khan, Luis M. Mendez, Sarah McGuffin, Chris Jonsson, Mamta K. Jain, Smruthi Senthil, Kimberly Turner-Gray, Sanjay Mehta, Mary Lewinski, Masoud Azizad, Christopher Chow, Lisa Nakatani, Derrick Williamson, Hisham Atriss, Matthew Caloura, Midhun Malla, Hannah Hazard-Jenkins, Aimee Wilkin, Jamraus Fayssoux, Hannah Seagle, Rachel Presti, Alem Haile
Journal: Annals of Internal Medicine (2023)

Background: Development of safe and effective SARS-CoV-2 therapeutics is a high priority. Amubarvimab and romlusevimab are noncompeting anti–SARS-CoV-2 monoclonal antibodies with an extended half-life. Objective: To assess the safety and efficacy of amubarvimab plus romlusevimab. Design: Randomized, placebo-controlled, phase 2 and 3 platform trial. (ClinicalTrials.gov: NCT04518410) Setting: Nonhospitalized patients with COVID-19 in the United States, Brazil, South Africa, Mexico, Argentina, and the Philippines. Patients: Adults within 10 days onset of symptomatic SARS-CoV-2 infection who are at high risk for clinical progression. Intervention: Combination of monoclonal antibodies amubarvimab plus romlusevimab or placebo. Measurements: Nasopharyngeal and anterior nasal swabs for SARS-CoV-2, COVID-19 symptoms, safety, and progression to hospitalization or death. Results: Eight-hundred and seven participants who initiated the study intervention were included in the phase 3 analysis. Median age was 49 years (quartiles, 39 to 58); 51% were female, 18% were Black, and 50% were Hispanic or Latino. Median time from symptom onset at study entry was 6 days (quartiles, 4 to 7). Hospitalizations and/or death occurred in 9 (2.3%) participants in the amubarvimab plus romlusevimab group compared with 44 (10.7%) in the placebo group, with an estimated 79% reduction in events (P < 0.001). This reduction was similar between participants with 5 or less and more than 5 days of symptoms at study entry. Grade 3 or higher treatment-emergent adverse events through day 28 were seen less frequently among participants randomly assigned to amubarvimab plus romlusevimab (7.3%) than placebo (16.1%) (P < 0.001), with no severe infusion reactions or drug-related serious adverse events. Limitation: The study population was mostly unvaccinated against COVID-19 and enrolled before the spread of Omicron variants and subvariants. Conclusion: Amubarvimab plus romlusevimab was safe and significantly reduced the risk for hospitalization and/or death among nonhospitalized adults with mild to moderate SARS-CoV-2 infection at high risk for progression to severe disease. Primary Funding Source: National Institute of Allergy and Infectious Diseases of the National Institutes of Health.